"We make it very clear to them they don't have to choose sides," she adds. "They can go wherever they want and be with whom they want."

Garth is even considering giving up life in the country and moving back to Los Angeles, where Facinelli currently resides. "I want the girls to have more access to their dad," she says, "and I like him to be able to pick them up from school. I just want everyone to be healthy and happy."

For more on Jennie Garth's life as a single mother, pick up the latest issue of PEOPLE, on newsstands now